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CVE-2013-4521

25
FAUCET Score

CVE-2013-4521 describes a critical deserialization vulnerability in the RichFaces implementation within Nuxeo Platform versions 5.6.0 (before HF27) and 5.8.0 (before HF-01). This flaw allows remote, unauthenticated attackers to execute arbitrary code by sending specially crafted serialized data, potentially leading to full system compromise. With a CVSS score of 9.8 (CRITICAL), this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. The FAUCET Risk Score of 82/100 further emphasizes its severity. Despite its high severity, there is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage for this CVE are also minimal, suggesting it has not garnered widespread attention.

Impacted Technologies

VendorProductVersion(s)CPE
5.6.0CPE matchmatch criteria
cpe:2.3:a:nuxeo:nuxeo:5.6.0:-:*:*:*:*:*:*
5.6.0CPE matchmatch criteria
cpe:2.3:a:nuxeo:nuxeo:5.6.0:hotfix01:*:*:*:*:*:*
5.6.0CPE matchmatch criteria
cpe:2.3:a:nuxeo:nuxeo:5.6.0:hotfix02:*:*:*:*:*:*
5.6.0CPE matchmatch criteria
cpe:2.3:a:nuxeo:nuxeo:5.6.0:hotfix03:*:*:*:*:*:*
5.6.0CPE matchmatch criteria
cpe:2.3:a:nuxeo:nuxeo:5.6.0:hotfix04:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.14%
Probability of exploitation in next 30 days
EPSS Percentile
89.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0414 is in the 83rd percentile among its peer group of 36,821 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch

References

doc.nuxeo.com / display/public/ADMINDOC58/Nuxeo+Security+Hotfixes
Broken LinkVendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / nuxeo/richfaces/commit/6cbad2a6dcb70d3e33a6ce5879b1a3ad79eb1aec
PatchThird Party Advisory